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6.0 MAINTENANCE
WARNING: DISCONNECT FROM ALL ELECTRICAL SUPPLIES BEFORE BEGINNING
ANY WORK ON THE ELECTROMAX SOLAR. FLUID CONTAINED IN THE DOMESTIC
HOT WATER, CENTRAL HEATING AND SOLAR CIRCUITS MAY BE VERY HOT!
To ensure the continued safe and efficient operation of the Electromax Solar it should be
regularly maintained.
Maintenance should be carried out by a competent person and any replacement parts used
should be authorized Heatrae Sadia Electromax Solar spare parts.
It is recommended that maintenance is carried out annually and should include the checks
detailed in the sections below:
6.1 PREPARATION
1.
Switch off all electrical supplies to the Electromax Solar.
2.
Turn off the mains water supply to the Electromax Solar and release the system pres-
sure by opening a hot tap. Some hot water will flow for a short while, this is normal.
3.
Remove front and top panels.
4.
Visually check all pipework for leaks
6.2 COLD WATER COMBINATION VALVE
The strainer is incorporated within the pressure reducing valve housing of the cold water
combination valve. To inspect and clean the strainer:
1.
Turn off the cold water supply and drain the Electromax Solar.
2.
Using a spanner unscrew the pressure reducing cartridge and remove the moulded housing.
The strainer will be removed with the cartridge.
3.
Wash any particulate matter from the strainer under clean running water.
4.
Replace the strainer and screw the pressure reducing valve cartridge into the moulded
housing.
5.
Turn on the cold water supply , refill the Electromax Solar and check for leaks.
6.3 DOMESTIC HOT WATER EXPANSION VESSEL
1.
Remove the dust cap from the expansion vessel.
2.
Check the charge pressure of the vessel using a tyre pressure gauge. The pressure (with
system de-pressurised) should be 0.35 MPa. If lower than the required setting it should
be re-charged using a tyre pump (Schraeder valve type). DO NOT over charge.
3.
Re-check the charge pressure and when correct replace the dust cap.
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